Hand-held wireless vacuum cleaners can be described as the cleaning products of the fire in recent years. With their small size, flexible use, light weight, and the advantages of brush heads and suction heads, they can almost meet the needs of cleaning the whole house. It has deeply captured a large number of loyalty. user.

1. Technical goals of wireless vacuum cleaners:

Using single-chip microcomputer to control motor technology and induction technology to achieve equipment dust collection

2. Technical and functional requirements for wireless vacuum cleaners

2.1 Product requirements design: a portable vacuum cleaner that can be used in vehicles or homes, and the application module can be switched at the power end of the device, and then it can be changed to another device form for use.

2.2 Description of terminal equipment technology development functions:

1. Power supply mode: 11.1v lithium battery (3 18650 batteries 5C), motor demand voltage 8-14, working current 5-8A

2. Control board requirements: ①Battery part (equivalent to mobile power supply) ②Vacuum cleaner control switch

3. Battery part: 3 18650 5C power batteries

Functional requirements: TYPE-c charging (5V) to charge the battery; the top of the battery extends over 12V8A to power the vacuum cleaner (can be used while charging, and will not damage the battery; motor 390 and 540 are determined according to the needs of the vacuum cleaner motor) quasi;

12VDC car cigarette lighter is directly powered, the battery is not charged when the device is in use; the battery can be charged when the device is not in use

Annular charging indicator (white light normal battery indicator, red light flashing under battery indicator, red light charging indicator, blue light full indicator)

Power requirement, battery protection board, charge and discharge protection, over current protection, over temperature protection function

The power supply part is not switched. When there is a load, the power supply automatically supplies power; when there is no load, the power supply automatically cuts off the power supply. In addition, the power supply also has its own Hall switch, which can only supply power when there is a load and the Hall switch detects the device.

4. Vacuum cleaner part

Vacuum cleaner power control switch, first gear, on and off

It can be directly connected to the car's cigarette lighter 12V 10A power supply (directly connected to the 12VDC cigarette lighter in the power supply part), or it can be connected to a battery power supply.

5. Product size of power supply and control board:

The size of the power control board, a circular diameter of about 48MM, try to compress the height

Vacuum cleaner power control board size: long strip, 20MM width 50MM length

1. Cancel the USB external charging port, add 12VDC head power supply (the schematic diagram needs to be modified), and charge (special requirements: the TYPE-c charging port and the 12VDC head are at the same plane height); 2 ring RGB indicator lights

1. Three-contact power supply; 2. Anti-static test to prevent output discharge caused by mis-contact; 3. The contact signal source communicates with other circuit board solution companies; 4. The power supply comes with a Hall switch.

Vacuum cleaner part: 1. Switch with indicator light 2. Power supply by three contacts

2.3 Description of mobile application technology development function: none

2.4 Web-side technology development function description: none

2.5 Cloud server docking technology development function description: none

Third, other requirements for wireless vacuum cleaners

3.1. Description of use environment: normal temperature and normal state

3.2. Product certification description: 3C certification, FCC certification, CE certification (certification by Party A, assistance by Party B.)

3.3. Part of the information needs to be provided by Party A.